Traffic and Highway Engineering
5th Edition
ISBN: 9781305156241
Author: Garber, Nicholas J.
Publisher: Cengage Learning
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Question
Chapter 5, Problem 13P
To determine
The equivalent number of PDO (Property Damage Only) crashes.
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A 2-mile long section of a roadway has recorded 20 crashes (total) during a period of 5 years. What is the crash rate for the section in terms of rate per 100 million entering vehicles?
2. The number of accidents for 8 years recorded in a certain section of
a highway is 6582. If the average daily traffic is 463, what is the
accident rate per million entering vehicles?
Problem 25: The number of accidents for 4 years recorded in a certain section of a highway is
4,892. If the average daily traffic is 438, determine the accident rate per million entering vehicles.
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Traffic and Highway Engineering
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- 1. With the new highway interchange at a dangerous street intersection, police records indicate an average of 5 accidents per month. The Department of Traffic Safety wants to investigate the probability of the following occurring in any month:a) No more than 4 accidents.c) At least 2 accidents.b) A single accident.d) At most 2 accidents in 15 days.arrow_forwardThe number of accidents for 6 years recorded in a certain section of a highway is 589. If the average daily traffic is 1,476, determine the accident rate per million entering vehicles. Answer in whole number.arrow_forwardA proposed improvement will widen a two-lane rural highway from 9-ft-wide (per lane) to 11-ft-wide (per lane) if the highway has an AADT of 2100 veh/day. If there are an average of 25 crashes per year on the segment proposed for improvement, and 67% of the crashes are of the type targeted by the improvement, estimate the expected number of crashes (per year) after the improvement is constructed.arrow_forward
- It is observed that 50 traffic crashes occurred on a 20-mile long section of Route 120 in one year. If the average daily traffic on the section was 5500 vehicles determine the rate of fatal crashes per 100 million vehicle-mile if 6% of the crashes involved fatalitiesarrow_forwardThe number of accidents for 6 years recorded in a certain section of a highway is 589. If the average daily traffic is 476, determine the accident rate per million entering vehicles.arrow_forwardProblem 1. A segment of a two-lane rural highway of length 5.2 miles carries 10,000 vehicles per day traffic. The width of lane is 11 ft with 6 ft wide paved shoulder. What is the predicted number of total crashes of the segment?arrow_forward
- The accident rate for 100 million vehicle miles of travel is 9.8. The length of the road is 15 mileswith an ADT of 67,000. Determine the estimated yearly reduction in total crashes if the crashreduction factor is one third.arrow_forwardData on a traffic accident recorded on a certain intersection for the past 5 years has an accident rate of 416 per million entering vehicles. If the average daily traffic entering the intersection is 504 find the total number accidents during the 5 year period.arrow_forwardNeed type answer a. A section of road has 55 accidents recorded in three years. For the same period, the estimated vehicle travel on the section was 23 mvk. Considering only those sections having the same characteristics as the section under study, the mean rate is 80 accidents per 100 mvk. Is the section hazardous with 90 percent level of confidence? b. Based on the graph of the accidents time per day on ‘explain’, what time makes up the most number of accidents? Discuss and explain why the frequency of accident is high.arrow_forward
- Data on a traffic accident recorded on a certain intersection for the past 5 years has an accident rate of 416 per million entering vehicles. If the average daily traffic entering the intersection is 504 find the total number accidents during the 5 year period. Answer in whole number.arrow_forwardQ 04: Discuss Road accident data base and also suggest what remedial measures are required to reduce the causes of accidents.arrow_forwardProblem 2 The table shows reported accidents for a 10-mile highway section of the Diosdado Macapagal Boulevard. Property Damage Year 2000 2001 2002 2003 2004 Average Daily Traffic 20,500 22,000 23,500 24,000 25,500 165 150 170 170 160 Injury Accidents 40 45 50 45 60 a) Compute the severity ratio. b) Compute the accident rate for injury accidents in HMVM. c) Compute the accident rate in HMVM. Fatal Accidents 5 5 10 16 19arrow_forward
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